3M Co. (NYSE: MMM) has completed the $1 billion acquisition of Polypore International Inc.’s (NYSE: PPO) separations media business.

The target makes membrane technology and ultrafiltration products that are used mainly for blood treatments in the life sciences and pharmaceutical sectors. Ultrafiltration is a process that separates tiny particles from membranes. The acquired business has $210 million in annual sales and will become part of 3M’s industrial business group.

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